Why doesn't SIP work over vpn?

Question

Payment systems

Hey Ya!
We set up a vpn l2tp / ipsec channel, tested it with the Internet from another place, everything worked great! And registration took place, and calls passed.
And now they put the whole thing where the phone should be, not a fig.
There is a channel from the Asterisk server, I see the phone and I see the server from the phone, but the phone is not registered.
What could be the reason?
A softphone from LAN (10.10.10.25 see diagram) works without problems.

Answer 1

2019 is in the yard, KYC / AML policies have long been mandatory in this area. Without verification, there is nothing sensible. And what is there are mostly scammers who, as soon as a large amount is collected, will block the withdrawal and require verification.

Answer 2

Completely without verification only if large limits are not needed, but the easiest way is with robokassa.

Answer 3

Try unitpay) but there, in my opinion, a webmoney certificate is needed

Answer 4

Connect separately POISON, Qiwi, WM. There will be more problems with aggregators, believe me.

Answer 5

There are no solutions without verification, only anonymous Qiwi and Poison wallets, but this will not live long. With verification, these two, as well as a number of payments such as PayinPayout, Robokassa, Unitpay, Interkassa, Payop, Frikassa (the same kiwi and poison) and others.

Answer 6

Without verification, you can accept payments through the cryptocurrency aggregator https://paykassa.pro/ru/. To start accepting payments through our service, you just need to register.
The following are available for accepting payments:
- cryptocurrencies from the top 30
- payment systems (Payeer, advcash, Prefect money)

Answer 7

Check with tcpdump on the Asterisk side whether REGISTER SIP packets reach it, whether Asterisk responds.